There are a few commits between -56 and -57 that could have introduced this regression:
6909b9d Input: ALPS - set DualPoint flag for 74 03 28 devices 08166fa Input: ALPS - allow touchsticks to report pressure 02645a4 Input: ALPS - handle 0-pressure 1F events 89e4686 Input: ALPS - add touchstick support for SS5 hardware
I'll start a kernel bisect and post a test kernel shortly.
There are a few commits between -56 and -57 that could have introduced this regression:
6909b9d Input: ALPS - set DualPoint flag for 74 03 28 devices
08166fa Input: ALPS - allow touchsticks to report pressure
02645a4 Input: ALPS - handle 0-pressure 1F events
89e4686 Input: ALPS - add touchstick support for SS5 hardware
I'll start a kernel bisect and post a test kernel shortly.